Last weekend i installed a rear backup camera on my Avic-x910BT head unit. Over all the install was normal except for rubber housing that connected the tailgate to the car's frame. I had to use a coat hanger with a hook at the end of it to push the camera video and power wires though.
I got the camera for $20! Thanks Ebay!
Jensen JCAM1 Rearview Backup Camera 150° Viewing Angle